{"product_id":"pentair-744000330-red-orp-sensor-for-acu-trol-ak110-and-ak600-commercial-chemical-controller","title":"Pentair Red ORP Sensor for Acu-Trol AK110 and AK600 Commercial Chemical Controller, 744000330","description":"\u003cp\u003eThe Pentair 744000330 is the red ORP sensor for the Acu-Trol AK110 and AK600 commercial chemical controllers. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the sensor does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eORP, oxidation reduction potential, is the measure of how hard the sanitizer in the water is actually working. A chemical controller reads it continuously and uses it to decide when to feed. Everything the controller does downstream rests on that one number being right.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProbes wear out\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn ORP probe is a consumable. Its response slows and its readings drift with age and exposure to pool water, and past a certain point cleaning and recalibration stop bringing it back. On a commercial system, where a controller runs unattended between service visits, a probe that has quietly gone out of tolerance is worse than no probe at all.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCheck the color and the part number on the sensor you are removing. This is the red ORP sensor, part 744000330, for the AK110 and AK600.\u003c\/p\u003e","brand":"Acutrol","offers":[{"title":"Default Title","offer_id":48626499518676,"sku":"ATR-451-4122","price":433.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_983f9998-ac4d-438b-bf73-7413785c838c.jpg?v=1788710993","url":"https:\/\/www.activepoolsupply.com\/products\/pentair-744000330-red-orp-sensor-for-acu-trol-ak110-and-ak600-commercial-chemical-controller","provider":"Active Pool Supply","version":"1.0","type":"link"}